Machine for dishing or forming metal



(No Model.)

- J. S. WORTH. MACHINE FOR DISHING 0R FORMING METAL. No. 603,096. Patented Apr. 26, 1898.

INVENTOR:

UNITED STATES PATENT rEicE.

JOHN WQRTH, OF COATESVILLE, PENNSYLVANIA.

MACHINE FOR DISHING OR FORMING METAL.

SPECIFICATION forming part of Letters Patent No. 603,096, dated April 26, 1898.

Application-filed October 22, 1897. Serial No. 656,017. (NomodeL) To all whom it may concern:

Be it known that I, JOHN S. WORTH, of Ooatesville, in the State of Pennsylvania,have invented certain new and useful Improvements in Machines forDishing or Forming Metal, whereof the following is a specification, reference being had to the accompanying drawings.

In said drawings, Figure 1 represents a View, partly in side elevation and partly in vertical centralsection, through an apparatus embodying my invention. Fig. 2 is a top or plan view of a portion of the housing. Fig. 3 is a partial plan view of the under side of the table or former upon whose upper face the metal is supported, showing certain details of the actuating mechanism; and Fig. 4 is a plan view of the forming-roller.

A represents the base of the machine, upon which are mounted uprights A, supportinga pair of horizontal beams A which together form a horizontal track with a longitudinal opening running throughoutsubstantiallythe whole length. The base A is prolonged at one end beyond said uprights, as indicated at A and supports upon short standards d a low horizontal frame D. A concave table or former B is centrally supported upon a stem (3, rotatably mounted in a socket a, dependent from the base A. In the instance shown the concavity of said table is substantially in the are of a circle throughout, but obviously this may be modified and the surface of the former may have any desired contour. At the point where the stem 0 merges into the bottom of the former a wide horizontal ofiset or shoulder is formed circumferentially, as indicated at c, and a short distance above the shoulder a a second horizontal shoulder c is formed, overhanging the first one. Between the shoulder c and intermediate between it and the bearing-surface upon the base A a ratchet-wheel G is attached to the stem 0, said wheel being of somewhat greater diameter than the diameter of the shoulder 0, so as to present a flat surface projecting beyond the periphery thereof. Upon the surface thus formed a sliding pawl-carrier rests, said pawl-carrier (see Fig. 3) comprising the two parallel side pieces m m,

united at their ends by the curved portions m m and secured to the end of a connectingrod M. The side pieces in m freely embrace the periphery of the former between the shoulders o and 0, but rest and ride upon the outwardly-projecting upper face of the ratchetwheel C. At the respective ends of the pawlcarrier are arranged spring-actuated pawls N N, adapted to engage with the ratchetwheel at each reciprocation of the pawl-car rier and thus intermittently rotate said wheel in the same direction. The means for effecting this reciprocation will be hereinafter described.

Supported upon and riding between the tracks A is a hydraulic cylinder J, having suitable connections J J for admission and discharge of fluid under pressure, said connections being flexible or otherwise adapted to permit the movement of said cylinder. The cylinder J is provided with the top rollers K and bottom rollers K, adapted to move freely along the tracks A but retaining the cylinder firmly in position against vertical movement in either direction. The cylinder is provided with a plunger H, at whose lower end is a roller-carrier G, comprising a pair of downwardly-depending arms G, in which the forming-roller I is rotatably mounted by means of a longitudinal axle t'. The rollercarrier G has a lateral projection g, to which is pivotally attached at f a connecting-rod F, also pivotally attached at f to the plunger F of a horizontal hydraulic cylinder E, provided with suitable connections 6 e" for admission and discharge of fluid under pressure. Said cylinder is supported upon the extension D of the main frame. The portion D of this extension, which lies between the front end of the cylinder E and the edge of the former B, is longitudinally slotted and forms a track or way upon which a flat bearing-piece F secured to the front end of the plunger F, rides in a horizontal direction. From the lower side of said bearing-piece a rigid vertical arm 9 F extends down through the slotted portion D of the frame, the lower end of said arm being pivotally secured at f to the connecting-rod M of the pawl-carrier. The track D,

formed by the extension, terminates in close proximity to the periphery of the rotating former B, and diametrically opposite to this point there is arranged a short supplemental track D supported upon an upright 61 and adapted to sustain the roller I.

It is obvious that when the plunger F is thrown outward from the cylinder E the roller I, which is in its extreme right-hand position in Fig. 1, will be caused to travel off from the end of the track D anddiametrically across the convex surface of the former B until it reaches the other side thereof, when it will ride over onto the supplemental track D This movement of the roller maybe attended by a positive downward thrust of the plunger H, so that in addition to the weight of the,

roller any desired degree of pressure may be brought to bear upon the surfaceof the former B. Simultaneously with the forward movement of the plunger F and consequent travel of the roller across the former B the connecting-rod M will be shifted longitudinally, and at the period which corresponds with there/sting of the roller I on the supplemental track D the pawl Nwill engage with the ratchet C and rotate the former B through a distance corresponding with the period of engagement of the ratchet. Upon the return movement of the plunger F the roller will return across the table and remountuponthe track D. D uring the period that it rests thereon the pawl N will be shifted into engagement with the ratchet and will continue the rotary movement of the former B in the same direction and to the same extent as before.

The operation of the apparatus is therefore as follows: The sheet of metal to be formed or dished having been placed upon the upper surface of the former B, the roller I is caused to travel across the face thereof, and either by its own weight or by the additional pressure afforded by means of the plunger H depresses the metal during its passage across the same. After the roller has passed beyond the metal at the end of its movement and is supported upon the track the former B is rotated and a new surface of metal thus presented for the rolling action, which may be continued until the proper form has been imparted to the plate.

Having thus described my invention, I would state that although I have specified andshown hydraulic plungers and cylinders as the preferred actuating mechanism for effecting the roller movement and a pawl-andratchet device for effecting the rotation of the former I do not limit myself to these particular mechanisms. Neitherdo I limit myself to the use of a device in which the roller passes off from the table at each end of the reciprocating movement, since obviously one of the pawls might be omitted and the shiftprovided with actuating mechanism, substan- I tially as set forth of a roller-carrier and forming-roller; a track adapted to support said roller and arranged adjacent to said former;

means, substantially as set forth, for shifting the roller diametrically with relation to said former and onto the said track; and means,

substantially as set forth, for rotating said formerin the described relation to the movements of the roller.

2. The combinatiomwith a rotatable former provided with actuatin gm echanism, substantially as set forth; of an overhanging track; a roller-carrier and forming-roller; a rollertracl: adapted to support said roller when shifted clear of said former; means, substantially as set forth, for shifting the roller diametrically with relation to the former and onto said roller-track; and means, substantially as set forth, comprising mechanism carried upon the overhanging track, for shifting said roller in a direction substantially parallel to the axis of rotation of the former.

3. The combinatiomwith a rotatable former provided with actuating mechanism, substantially as set forth; of an overhanging track; a hydraulic cylinder adapted to travel along said track; a vertical plunger for said cylinder; a roller-carrier mounted upon said plunger; a forming-roller journaled in said carrier a hydraulic cylinder and horizontal plunger also connected with roller-carrier a rollertrack adapted to support said roller when shifted clear of said former; and a rod connected with said second hydraulic plunger and also with the rotating mechanism for the former, and adapted to actuate said mechanism iu the described relation to the movements of the roller-carrier, substantially as set forth.

4. The combinatiomwith a rotatable former supported upon astem, of a ratchet-wheel intermediate between said stem and the body of the former; a pawl-carrier having a pawl adapted to engage with said ratchet-wheel; a connecting-rod and actuating mechanism for said pawl carrier; a formingroller; and means, substantially as set forth, for shifting said roller diametrically across and beyond said former in the described relation to the rotary movement thereof.

7 JOHN S. WORTH.

Witnesses:

JAMES H. BELL, GEO. D. STRAIN. 

